Vasishta, P C <br/><br/>
Textbook of plant ecology 

 - 2 
 -  Vishal Publications, Delhi  1979 
 - 270 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant ecology; Botany
<br/><br/><label>Dewey Class. No.: </label>PG 581.5  VAS-T2